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P7300/P5300/M7300/M5300 platform audio issues

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Sep 8, 2002
Florida, where you wish you were!
I'm experiencing a consistent audio "bounce", perhaps best described as a warble, at the start of a received signal on both my P7370 and my M5300.

It is severe enough that it can render the first syllable of a received transmission unintelligible.

It's worse in the M7300, to the point that it even affects the beeps made when you press a key or rotate a knob.

My tentative diagnosis is that the audio AGC system is not properly aligned. It sounds just like AGC bounce.

Has anyone else experienced this issue on this platform and if so, what can be done to correct it?
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